KOLKATA, 19 JULY: ITC Ltd today said its hotels had been accorded the LEED Platinum rating by US Green Building Council (USGBC), thus making it the 'greenest luxury hotel chain in the world1, "All ITC's luxury hotels have been accorded the highest rating: LEED Platinum (Leadership in Energy and Environmental Design), making it the 'greenest luxury hotel chain in the world'," the company said in a statement. The LEED green building rating system is a feature-oriented rating system that awards buildings points for satisfying specified green building criteria.